code: def Selu(context, node):
      x = context[node.inputs[0]]
      alpha = 1.6732631921768188
      lamda = 1.0507010221481323
      out_elu = mb.elu(x=x, alpha=alpha)
      out = mb.mul(x=out_elu, y=lamda, name=node.name)
      context.add(node.name, out)
  
file_path: turicreate/src/external/coremltools_wrap/coremltools/coremltools/converters/mil/frontend/tensorflow/test/test_custom_ops.py
imports: from coremltools.converters.mil import testing_reqs
  from coremltools.converters.mil.testing_reqs import *
  from coremltools.converters.mil.frontend.tensorflow.test.testing_utils import make_tf_graph, tf_graph_to_proto, run_compare_tf
  from coremltools.converters.mil.frontend.tensorflow.tf_op_registry import register_tf_op
  from coremltools.converters.mil.frontend.tensorflow.tf_op_registry import _TF_OPS_REGISTRY
  from coremltools.converters.mil.mil.ops.defs._op_reqs import *
  from coremltools.converters.mil.mil import Builder
  from coremltools.converters.mil.mil.types.symbolic import is_symbolic
label_desc: Use image node_id 3 for calling a global function with example usage: Selu(context, node) without return types